/*
 * Copyright (C) 2013 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.squareup.picasso;

import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.provider.MediaStore;
import java.io.IOException;

class ContentProviderBitmapHunter extends ContentStreamBitmapHunter {
	private static final String[] CONTENT_ORIENTATION = new String[] { MediaStore.Images.ImageColumns.ORIENTATION };

	@SuppressWarnings("rawtypes")
	ContentProviderBitmapHunter(Context context, Picasso picasso,
			Dispatcher dispatcher, Cache cache, Stats stats, Action action) {
		super(context, picasso, dispatcher, cache, stats, action);
	}

	@Override
	Bitmap decode(Request data) throws IOException {
		setExifRotation(getContentProviderExifRotation(
				context.getContentResolver(), data.uri));
		return super.decodeContentStream(data);
	}

	static int getContentProviderExifRotation(ContentResolver contentResolver,
			Uri uri) {
		Cursor cursor = null;
		try {
			cursor = contentResolver.query(uri, CONTENT_ORIENTATION, null,
					null, null);
			if (cursor == null || !cursor.moveToFirst()) {
				return 0;
			}
			return cursor.getInt(0);
		} catch (RuntimeException ignored) {
			// If the orientation column doesn't exist, assume no rotation.
			return 0;
		} finally {
			if (cursor != null) {
				cursor.close();
			}
		}
	}
}
